| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [verb] for | 1650 |
|
| 2 | has been [vb pp] for | 1373 |
|
| 3 | has been described [prep] | 228 |
|
| 4 | has been described [prep] | 228 |
|
| 5 | [verb] been described for | 13 |
|
| 6 | have been described for | 13 |
|
| 7 | has been described for | 10 |
|
| 8 | has been describe for | 10 |
|
| 9 | has [been] described for | 10 |
|
| 10 | has [be] described for | 10 |
|
| 11 | [vb -s] been described for | 10 |
|
| 12 | has be described for | 10 |
|
